EnumMap containsValue(value) method in Java

Last Updated : 24 Jul, 2020

The Java.util.EnumMap.containsValue(value) method in Java is used to determine whether one or more key of the map is associated with a given value or not. It takes the value as a parameter and returns True if that value is mapped by any of the keys in the EnumMap.

Syntax:

boolean containsValue(Object value)

Parameter: The method accepts one parameter value which refers to the value whose mapping is to be checked by any of the key.

Return Value: It returns true when one or more key is mapped to same value.

Below programs illustrate the containsValue() method:

Program 1:

// Java program to demonstrate containsValue() method 
import java.util.*; 
  
// An enum of gfg ranking is created 
public enum rank_countries { 
    India, 
    United_States, 
    China, 
    Japan, 
    Canada, 
    Russia 
}; 
  
class Enum_map { 
    public static void main(String[] args) 
    { 
  
        EnumMap<rank_countries, Integer> mp = new 
        EnumMap<rank_countries,Integer>(rank_countries.class); 
  
        // values are associated in mp 
        mp.put(rank_countries.India, 72); 
        mp.put(rank_countries.United_States, 1083); 
        mp.put(rank_countries.China, 4632); 
        mp.put(rank_countries.Japan, 6797); 
        mp.put(rank_countries.Canada, 1820); 
  
        // check if map contains mapping at specified key 
        boolean ans = mp.containsValue(72); 
  
        // prints the result 
        System.out.println("Map contains 72: " + ans); 
    } 
} 

Output:

Map contains 72: true

Program 2:

// Java program to demonstrate containsValue() method 
import java.util.*; 
  
// An enum of gfg ranking is created 
public enum rank_countries { 
    India, 
    United_States, 
    China, 
    Japan, 
    Canada, 
    Russia 
}; 
  
class Enum_map { 
    public static void main(String[] args) 
    { 
  
        EnumMap<rank_countries, Integer> mp = new 
        EnumMap<rank_countries,Integer>(rank_countries.class); 
  
        // values are associated in mp 
        mp.put(rank_countries.India, 72); 
        mp.put(rank_countries.United_States, 1083); 
        mp.put(rank_countries.China, 4632); 
        mp.put(rank_countries.Japan, 6797); 
        mp.put(rank_countries.Canada, 1820); 
  
        // check if map contains mapping at specified key 
        boolean ans = mp.containsValue(2000); 
  
        // prints the result 
        System.out.println("Map contains 2000: " + ans); 
    } 
} 

Output:

Map contains 2000: false

EnumMap keySet() Method in Java

akash1295

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